The Sentry intercepts the untrusted code’s syscalls and handles them in user-space. It reimplements around 200 Linux syscalls in Go, which is enough to run most applications. When the Sentry actually needs to interact with the host to read a file, it makes its own highly restricted set of roughly 70 host syscalls. This is not just a smaller filter on the same surface; it is a completely different surface. The failure mode changes significantly. An attacker must first find a bug in gVisor’s Go implementation of a syscall to compromise the Sentry process, and then find a way to escape from the Sentry to the host using only those limited host syscalls.
"When I was 17, I was at a girl's school and I had a friend who was a singer, and she wanted someone to produce for her. And I was like, 'I'll do it'," she recalls.
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不独此，某巨富去世，其女儿给他立碑，碑文写得幼稚，不伦不类不说，于凶礼中急切窜入吉礼，实在荒唐。
Жители Санкт-Петербурга устроили «крысогон»17:52
"I felt like I was dying... the pain was worse than it had ever been," she said.